Abstract
In 1951, NSF, then the National Sanitation Foundation, was approached by the Thermoplastics division of the Society of the Plastics Industry to initiate a research study related to the suitability of plastic pipe for potable water supplies. The results were reported in 1955 under the title “A Study of Plastic Pipe for Potable Water Supplies.” Following the publication of the study, NSF was requested by the plastics industry to establish a continuing testing and certification program on plastics materials, pipe, and fittings for potable water applications not only for toxicological considerations but also for performance evaluation. The Public Health and Industry Advisory Committee recommended the use of ASTM test procedures. The certification program was first started in 1959 and led to the creation of National Sanitation Foundation Standard Number 14 for Thermoplastic Materials in 1965. In 1991, NSF 14 became ANSI/NSF 14, the national standard for Plastic Piping Systems Components and Related Materials.